CLIVET WSAT-2 User Manual

43
®
Control
CONNECTING THE UNIT TO SUPERVISORY SYSTEMS
The H2OSYSTEM control module is fitted, as standard, with an RS485 serial communication port. It can thus communicate with the
outside world using a standard MODBUS protocol.
The RS485 serial port is located on the main board, and is made up of a series of three terminals marked 43(-), 44(+) and 45(GND).
These can be connected in a network, up to a maximum of 127 units. Each unit will have a unique network address. This address is
saved under the parameter ADDRESS in the CONFIGURATION menu.
The communication from and to the outside world follows a master – slave arrangement, with the supervisor acting as the master that
periodically queries the various control modules connected. The control modules respond to the queries by sending the requested
data, or alternatively by performing the command received.
THE CONTROL MODULE CAN SEND THE FOLLOWING DATA TO THE SUPERVISOR:
- The readings from all the temperature, humidity, pressure probes, etc.
- The unit operating mode
- Alarms
- The status of the digital outputs and inputs
THE CONTROL MODULE CAN RECEIVE THE FOLLOWING DATA FROM THE SUPERVISOR:
- New parameter settings
- ON-OFF commands
- Operating mode commands
3
1
4
3
4
4
4
5
4
8
4
7
4
6
5
0
4
9
G
N
D
2
4
V
T
T
L
R
S
4
8
5
3
8
4
1
4
2
4
0
3
9
3
6
3
7
3
5
3
3
3
4
3
2
3
0
2
9
RS485 SERIAL CONNECTION DIAGRAM ON THE CONTROL MODULE
MAIN CONTROL MODULE BOARD
1. To supervisory system
2. RS485 seial port terminal
3. Jumper JP1 - RS485 network termination: Insert jumper on the units at the end of the serial line
4. Jumper JP2 - Enable RS485 serial port: Insert jumper on the units to be connected to the supervisor

CLIVET WSAT-2 Specifications

General

Brand	CLIVET
Model	WSAT-2
Category	Air Conditioner
Language	English